Ventilated closet bowl



May 19, 1925. 1,538,084

L. A. BIRCH VENTILATED CLOSET BOWL Filed Aug. 20,. 1924 Patented May 19, 1925.

UNITED STATES LOUIS ARTHUR BIRCH, OF MINNEAPOLIS, MINNESOTA.

VENTILAT'ED CLOSET BOWL.

Application filed August 20, 1924. Serial No. 733,097.

To all whom it may concern:

Be it known that 1, Louis ARTHUR BIRCH, a citizen of the United States. residing ath linueapolis. in the county of Hennepin and State of hflinnesota, have invented certain new and useful Improvements in Ventilated (loset Bowls; and I do hereby declare the following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

hly invention provides a simple and highly efiicient ventilated closet bowl and, generally stated, consists of the novel construction. arrangement and combinations of devices hereinafter described and defined in the claim.

In the accompanying drawings, which illustrate my invention, like characters indicate like parts throughout the several views.

Referringto the drawings:

Fig. l is a front elevation showing the improved bowl, some parts being in vertical section on the line 11 of Fig. 2;

Fig. 2 is a side elevation of the bowl, some parts being; in vertical section on the line 2-2 of Fig. 1;

Fig. 3 is a horizontal section taken on the irregular line 33 of Fig. 1; and

Fin: 4 is a. fragmentary vertical section on the line 4l of Fig. 8.

The bowl is indicated as an entirety by the numeral 5, and hinged thereto is the customary seat (3 and cover 7. Secured on top of the bowl and acting as stops for the eat 6 are segmental stop strips 8 and 9 that are spaced to form air passages at 10 that are extended forward of the rear half of the bowl. These stop stripsare preferably of some slightly pliable material, such as wood fibre. cork, or leather. The bowl is provided with the customary perforated Water-flushing passage 11 that is connected to a water intake port 12 formed in the rear extension of the bowl. This port 12, at the inner surface of the bowl, has a depending discharge nozzle 13 that is slightly oblique, as best shown in Fig. 1, so that it will deliver water across the rear portion of the interior of the bowl. The numeral 14 indicates a short pipe sleeve cast into the port 12 to which the water supply pipe may be connected. At one side of the water intake port 12, the rear extension of the bowl is formed with an air outlet port or passage 15 that flares inwardly to the interior of the bowl and extends under the flushing passage 11. The numeral 16 indicates a pipe sleeve cast nto the outer extremity of the port 15, in which will be connected a vent pipe that will be extended to a flue or chimney or other sort of draft which will produce a constant flow of air from the bowl and thereby produce the required ventilation. It is also iin portant to note that, when the seat and cover are lowered, or when the draft through the seat is closed, air will be drawn in only through the ports 10 and from thence immediately below the seat into the air outlet port 15. This, as is obvious, will produce the best kind of ventilation.

It will be noted that the air outlet port 15 opens into the rear portion of the bowl immediately under the flushing passage 11 and at one side of the longitudinal axisof the bowl, and that the dischargepassage of the nozzle 13 terminates approximately at the longitudinal axis of the bowl and is ob liquely arranged so as to direct a flushing stream immediately under the air outlet port.

Vhat I claim is:

A closet bowl having); a perforated waterflushing passage extended in and around its rim portion and provided with an air outlet port opening into the rear portion of the bowl immediately below said flushing passage and at one side of the longitudinal axis of the bowl, said bowl further having a water-flushing nozzle with a discharge passage. the delivery portion of which is located lower down than said air outlet port approximately on the longitudinal axis of the bowl and is obliquely extended so as to direct a flushing stream under the said air outlet port.

In testimony whereof I allix my signature.

LOUIS ARTHUR BIRCH. 

